10 pcs S25 P21/5W Bay15D 1157 Bulb 12V 21W Original Tail Brake Light Bulb - Warm White

A dim tail light is the sort of fault you never see from the driver's seat. Someone flashes you at the lights, or it turns up on a roadworthy. These are 1157 twin-contact bulbs in a warm white, boxed ten at a time so both sides get done together and the leftovers stay in the boot.

One base, a long list of positions

The 1157 designation, also written BAY15D, S25 or P21/5W, is the twin-contact bayonet base used across tail, brake and indicator housings on a wide range of cars. The supplier cross-references these against 1016, 1034, 1076, 1130, 1154, 1158, 1493, 2057, 2357, 2397 and 7528, while stating plainly that the list is a reference only. Positions it nominates are side lights, parking lights, interior lights, turn signals, number plate lights and fog lights. Fitting is push, twist and done, with no adaptor and no change to the wiring.

Warm white rather than a blue-white

Warm white sits at the yellower end of the scale, nearer the tone of an original incandescent than the cold blue-white of cheap LED replacements. The supplier claims more brightness than the original bulb, better contrast and a better field of view. Those are its words rather than measured figures, and no lumen output appears anywhere in the listing.

Key features

• Ten in a box: both sides done at once, spares left for the next failure.
• Direct-fit 1157 base: no adaptor and no rewiring.
• Warm white output: a yellower tone than blue-white alternatives.
• Aftermarket replacement: built to swap for the original part, not sold as a genuine one.

Specifications

• Quantity: 10 bulbs
• Base and fitment: 1157 / BAY15D / S25 / P21/5W
• Voltage: 12 V
• Wattage: title states 21 W; the supplier's description and packing list state 5 W. Both are published as supplied; no basis is given for either.
• Colour: warm white
• Type: halogen, per the packing list
• Cross references: 1016, 1034, 1076, 1130, 1154, 1158, 1493, 2057, 2357, 2397, 7528
• Lumen output: not published

What's in the box

• 10 x warm white 12 V 1157 BAY15D S25 halogen bulbs

Before you fit these

• Restrictions on light colour apply to rear and forward-facing lighting and vary by state. A warm white bulb in a tail, brake or indicator housing may not meet them, so confirm the requirements that apply to your vehicle and state before fitting for road use.
• The listing quotes two different wattages. Check what your circuit and housing are built for before fitting, and treat the title figure and the description figure as unresolved.
• Do not touch the glass of a halogen bulb with bare fingers. Oil from skin causes early failure.
• Pull your existing bulb and compare it. The supplier states its own compatibility chart is a reference only.

Worth keeping a couple in the glovebox with the fuses.

Returns, Refunds and Replacements

Products that are received faulty, damaged, or not as described are eligible for a return, refund, or replacement in accordance with the Australian Consumer Law (ACL). We are committed to ensuring all products meet the standards of quality and reliability expected by our customers. However, please note that we do not accept returns or provide refunds for change of mind. We encourage you to carefully consider your purchase to ensure it meets your needs and expectations.

Delivery Timeframe

Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows:

• For customers in Victoria, approximately 7-10 working days;
• For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days;
• For customers in WA, NT, and TAS, approximately 9-12 working days.